content: /**
   * Copyright (c) 2016-present, RxJava Contributors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
   * compliance with the License. You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License is
   * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
   * the License for the specific language governing permissions and limitations under the License.
   */
  
  package io.reactivex.flowable.internal.operators;
  
  import java.util.concurrent.*;
  import java.util.concurrent.atomic.AtomicReference;
  
  import org.reactivestreams.*;
  
  import hu.akarnokd.reactivestreams.extensions.RelaxedSubscriber;
  import io.reactivex.common.*;
  import io.reactivex.common.Scheduler.Worker;
  import io.reactivex.common.internal.disposables.DisposableHelper;
  import io.reactivex.flowable.Flowable;
  import io.reactivex.flowable.internal.subscribers.FullArbiterSubscriber;
  import io.reactivex.flowable.internal.subscriptions.*;
  import io.reactivex.flowable.subscribers.SerializedSubscriber;
  
  public final class FlowableTimeoutTimed<T> extends AbstractFlowableWithUpstream<T, T> {
      final long timeout;
      final TimeUnit unit;
      final Scheduler scheduler;
      final Publisher<? extends T> other;
  
      static final Disposable NEW_TIMER = new EmptyDispose();
  
      public FlowableTimeoutTimed(Flowable<T> source,
              long timeout, TimeUnit unit, Scheduler scheduler, Publisher<? extends T> other) {
          super(source);
          this.timeout = timeout;
          this.unit = unit;
          this.scheduler = scheduler;
          this.other = other;
      }
  
      @Override
      protected void subscribeActual(Subscriber<? super T> s) {
          if (other == null) {
              source.subscribe(new TimeoutTimedSubscriber<T>(
                      new SerializedSubscriber<T>(s), // because errors can race
                      timeout, unit, scheduler.createWorker()));
          } else {
              source.subscribe(new TimeoutTimedOtherSubscriber<T>(
                      s, // the FullArbiter serializes
                      timeout, unit, scheduler.createWorker(), other));
          }
      }
  
      static final class TimeoutTimedOtherSubscriber<T> implements RelaxedSubscriber<T>, Disposable {
          final Subscriber<? super T> actual;
          final long timeout;
          final TimeUnit unit;
          final Scheduler.Worker worker;
          final Publisher<? extends T> other;
  
          Subscription s;
  
          final FullArbiter<T> arbiter;
  
          final AtomicReference<Disposable> timer = new AtomicReference<Disposable>();
  
          volatile long index;
  
          volatile boolean done;
  
          TimeoutTimedOtherSubscriber(Subscriber<? super T> actual, long timeout, TimeUnit unit, Worker worker,
                  Publisher<? extends T> other) {
              this.actual = actual;
              this.timeout = timeout;
              this.unit = unit;
              this.worker = worker;
              this.other = other;
              this.arbiter = new FullArbiter<T>(actual, this, 8);
          }
  
          @Override
          public void onSubscribe(Subscription s) {
              if (SubscriptionHelper.validate(this.s, s)) {
                  this.s = s;
                  if (arbiter.setSubscription(s)) {
                      actual.onSubscribe(arbiter);
  
                      scheduleTimeout(0L);
                  }
              }
          }
  
          @Override
          public void onNext(T t) {
              if (done) {
                  return;
              }
              long idx = index + 1;
              index = idx;
  
              if (arbiter.onNext(t, s)) {
                  scheduleTimeout(idx);
              }
          }
  
          void scheduleTimeout(final long idx) {
              Disposable d = timer.get();
              if (d != null) {
                  d.dispose();
              }
  
              if (timer.compareAndSet(d, NEW_TIMER)) {
                  d = worker.schedule(new TimeoutTask(idx), timeout, unit);
  
                  DisposableHelper.replace(timer, d);
              }
          }
  
          void subscribeNext() {
              other.subscribe(new FullArbiterSubscriber<T>(arbiter));
          }
  
          @Override
          public void onError(Throwable t) {
              if (done) {
                  RxJavaCommonPlugins.onError(t);
                  return;
              }
              done = true;
              arbiter.onError(t, s);
              worker.dispose();
          }
  
          @Override
          public void onComplete() {
              if (done) {
                  return;
              }
              done = true;
              arbiter.onComplete(s);
              worker.dispose();
          }
  
          @Override
          public void dispose() {
              s.cancel();
              worker.dispose();
          }
  
          @Override
          public boolean isDisposed() {
              return worker.isDisposed();
          }
  
          final class TimeoutTask implements Runnable {
              private final long idx;
  
              TimeoutTask(long idx) {
                  this.idx = idx;
              }
  
              @Override
              public void run() {
                  if (idx == index) {
                      done = true;
                      s.cancel();
                      DisposableHelper.dispose(timer);
  
                      subscribeNext();
  
                      worker.dispose();
                  }
              }
          }
      }
  
      static final class TimeoutTimedSubscriber<T> implements RelaxedSubscriber<T>, Disposable, Subscription {
          final Subscriber<? super T> actual;
          final long timeout;
          final TimeUnit unit;
          final Scheduler.Worker worker;
  
          Subscription s;
  
          final AtomicReference<Disposable> timer = new AtomicReference<Disposable>();
  
          volatile long index;
  
          volatile boolean done;
  
          TimeoutTimedSubscriber(Subscriber<? super T> actual, long timeout, TimeUnit unit, Worker worker) {
              this.actual = actual;
              this.timeout = timeout;
              this.unit = unit;
              this.worker = worker;
          }
  
          @Override
          public void onSubscribe(Subscription s) {
              if (SubscriptionHelper.validate(this.s, s)) {
                  this.s = s;
                  actual.onSubscribe(this);
                  scheduleTimeout(0L);
              }
          }
  
          @Override
          public void onNext(T t) {
              if (done) {
                  return;
              }
              long idx = index + 1;
              index = idx;
  
              actual.onNext(t);
  
              scheduleTimeout(idx);
          }
  
          void scheduleTimeout(final long idx) {
              Disposable d = timer.get();
              if (d != null) {
                  d.dispose();
              }
  
              if (timer.compareAndSet(d, NEW_TIMER)) {
                  d = worker.schedule(new TimeoutTask(idx), timeout, unit);
  
                  DisposableHelper.replace(timer, d);
              }
          }
  
          @Override
          public void onError(Throwable t) {
              if (done) {
                  RxJavaCommonPlugins.onError(t);
                  return;
              }
              done = true;
  
              actual.onError(t);
              worker.dispose();
          }
  
          @Override
          public void onComplete() {
              if (done) {
                  return;
              }
              done = true;
  
              actual.onComplete();
              worker.dispose();
          }
  
          @Override
          public void dispose() {
              s.cancel();
              worker.dispose();
          }
  
          @Override
          public boolean isDisposed() {
              return worker.isDisposed();
          }
  
          @Override
          public void request(long n) {
              s.request(n);
          }
  
          @Override
          public void cancel() {
              dispose();
          }
  
          final class TimeoutTask implements Runnable {
              private final long idx;
  
              TimeoutTask(long idx) {
                  this.idx = idx;
              }
  
              @Override
              public void run() {
                  if (idx == index) {
                      done = true;
                      dispose();
  
                      actual.onError(new TimeoutException());
                  }
              }
          }
      }
  
      static final class EmptyDispose implements Disposable {
          @Override
          public void dispose() { }
  
          @Override
          public boolean isDisposed() {
              return true;
          }
      }
  
  
  }
  